| 牌号 | 化学成分（熔炼分析） % （质量分数） | |||||||||
| C | Mn | P | S | Alt | ||||||
| B180P2 | ≤0.08 | ≤0.08 | ≤0.12 | ≤0.025 | ≥0.015 | |||||
| B220P2 | ≤0.10 | ≤1.00 | ≤0.12 | ≤0.025 | ≥0.015 | |||||
| HC180P | ≤0.05 | ≤0.60 | ≤0.08 | ≤0.025 | ≥0.015 | |||||
| HC220P | ≤0.07 | ≤0.70 | ≤0.08 | ≤0.025 | ≥0.015 | |||||
| HC260P | ≤0.08 | ≤0.70 | ≤0.10 | ≤0.025 | ≥0.015 | |||||
| HC300P | ≤0.10 | ≤0.70 | ≤0.12 | ≤0.025 | ≥0.015 | |||||
| 号 | 拉伸试验 | r90 d | n90 | |||||||
| 屈服强度a | 抗拉强度 | 断后伸长率b，c | 不小于 | 不小于 | ||||||
| MPa | MPa | A80mm | ||||||||
| % 不小于 | ||||||||||
| B180P2 | 180～280 | 340 | 30 | - | - | |||||
| B220P2 | 220～320 | 380 | 28 | - | - | |||||
| HC180P | 180～230 | 280～360 | 34 | 1.6 | 0.17 | |||||
| HC220P | 220～270 | 320～400 | 32 | 1.3 | 0.16 | |||||
| HC260P | 260～320 | 360～440 | 29 | - | - | |||||
| HC300P | 300～360 | 400～480 | 26 | - | - |
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